Can dogs have Milk Whey?

Overview

Yes. Milk whey is generally safe for most dogs and can even be a nutritious addition to their diet thanks to its protein content. However, it’s best avoided in dogs with dairy allergies or lactose intolerance, as it still contains lactose and casein, both of which can lead to digestive issues like bloating, gas, or diarrhea.

Benefits

Milk whey is the liquid by-product after milk has been curdled and strained during cheese-making. Milk whey is a good source of protein and contains all the essential amino acids that a dog needs to support cellular functions.
Whey is packed with micronutrients, including calcium, potassium, and phosphorous, that are beneficial for the bone development of dogs.

Risks

Derived from milk, whey naturally contains casein and lactose, which can cause upset stomachs in dogs, especially those with lactose intolerance.
Milk whey may trigger allergic reactions in dogs with whey allergies or sensitivities.
Milk whey may be contaminated with bacteria which heat treatment failed to eliminate.

Servings

Some commercial dog food has added whey protein with the lactose removed.
Most dog food has balanced nutritional value, to add milk whey to your dog's food might cause a dietary imbalance. Speak to your vet or a pet nutritionist before adding milk whey to your dog's diet.
Avoid giving milk whey to lactose intolerance dogs.